Cover - shares	3 Months Ended
	Nov. 30, 2021	Jan. 19, 2022
Cover [Abstract]
Entity Registrant Name	GRIDIRON BIONUTRIENTS, INC.
Entity Central Index Key	0001629205
Document Type	10-Q/A
Amendment Flag	true
Current Fiscal Year End Date	--08-31
Entity Small Business	true
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Current Reporting Status	Yes
Document Period End Date	Nov. 30, 2021
Entity Filer Category	Non-accelerated Filer
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2022
Entity Common Stock Shares Outstanding		20,020,239
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	000-55852
Entity Incorporation State Country Code	NV
Entity Tax Identification Number	36-4797193
Entity Address Address Line 1	40 Wall Street
Entity Address Address Line 2	Suite 2701
Entity Address City Or Town	New York, NY 10005
Entity Address State Or Province	NY
Entity Address Postal Zip Code	10005
City Area Code	640) 380-1923
Local Phone Number	380-1923
Entity Interactive Data Current	Yes
Amendment Description	This Amendment No. 2 is being filed for the sole purpose of adding a convertible promissory note receivable from ST BioSciences, Ltd., (“STB”) a stock dividend distribution and a new address and phone number on page 1 above which were inadvertently omitted from Amendment No 1 on Form 10-Q/A filed on January 20, 2022. In addition, the appointment of a CFO was removed from Note 12 – Subsequent Events. See Note 3 –Asset Acquisition, Note 6 – Notes Receivable and Note 13 – Restatement in the accompanying notes to the financial statements for a discussion of the convertible promissory note receivable from STB. See Note 3 –Asset Acquisition for a discussion of the 19,831,623 shares acquired by STB as a result of the consummation of the transactions contemplated by the Amended and Restated Asset Purchase Agreement dated November 5, 2021. These shares which were distributed by STB to the STB shareholders as a dividend in January 2022.